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강상관계 물질 연구단
강상관계 물질 연구단
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Frustrated Magnetism in Mott Insulating (V1-xCrx)2 O3

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Title
Frustrated Magnetism in Mott Insulating (V1-xCrx)2 O3
Author(s)
J. C. Leiner; H. O. Jeschke; R. Valentí; S. Zhang; A. T. Savici; J. Y. Y. Lin; M. B. Stone; M. D. Lumsden; Jiawang Hong; O. Delaire; Wei Bao; C. L. Broholm
Publication Date
2019-02
Journal
PHYSICAL REVIEW X, v.9, no.1, pp.011035 -
Publisher
AMER PHYSICAL SOC
Abstract
V2O3 famously features all four combinations of paramagnetic versus antiferromagnetic and metallic versus insulating states of matter in response to percent-level doping, pressure in the GPa range, and temperature below 300 K. Using time-of-flight neutron spectroscopy combined with density functional theory calculations of magnetic interactions, we have mapped and analyzed the inelastic magnetic neutron scattering cross section over a wide range of energy and momentum transfer in the chromium-stabilized antiferromagnetic and paramagnetic insulating phases. Our results reveal an important magnetic frustration and degeneracy of the paramagnetic insulating phase which is relieved by the rhombohedral-to-monoclinic transition at TN ¼ 185 K. This leads to the recognition that magnetic frustration is an inherent property of the paramagnetic phase in ðV1−xCrxÞ 2O3 and plays a key role in suppressing the magnetic long-rangeordering temperature and exposing a large phase space for the paramagnetic Mott metal-insulator transition to occur. c.Published by the American Physical Society
URI
https://pr.ibs.re.kr/handle/8788114/5688
ISSN
2160-3308
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > Journal Papers (저널논문)
Files in This Item:
2019-271_(사사없음)_Frustrated Magnetism in Mott Insulating ðV1−xCrxÞ2O3.pdfDownload

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